Pull and drag-saw machine



June 25, 1935. T TELESKY 2,005,961

' PULL AND DRAG SAW MACHINE Filed Oct. 25, 1953 Patented June 25, 1935HULUAND-BBAG-SAW MACHINE 'TfiumniAmsterdamy' N.- Y. --ApplicationOctober-r25, 1933, SeriaLNo: 695,147?

r Claim. (-Cli 143---61) Unis:- invention. relates to -ithe -actioniofsawingu and cutting; substances andlmaterialsr The ob. jects of themechanism-andrfeamres:areethatsaw bladesof: diftenentrvlen'gths, widths,and thicknesses may be used, and may be pulled or dragged in bothdirections. More than one saw-blade may be secured or attached to thesame pins or bolts, and more than one saw-cut may be performed at onetime.

This machine may be operated by any motive power, by belts, chains,cables, gears and reciprocating rods or bars; in the shop, on the yard,on the field and in the woods; on a bench, movable frame or on anyconvenient vehicle; it saws and cuts horizontally, vertically or at anyangle; the stroke of the saw-blade may be adjusted to any length.

The form of the invention is illustrated in the accompanying drawing, inwhich Figure 1 is a vertical section of the entire machine; Figures 2,3, 4, 5, and 6 are operating details; Figure 7 is a plan view of amovable frame; Figure 8 is a vertical section of the movable frame;Figure 9 shows an apron; and Figure 10 shows a cover or hood.

The girder I 'is bolted and secured to the legs or standards 2, 2. Theascending and descending curved lever 3, (a straight lever could beused), is secured by a pin 4, to both sides of the girder I, and isoperated up and down by a lever bar 5, and push pull rod 6, whichsimultaneously raises or lowers the saw-blade 1 to the position asindicated by the dotted lines. The rod 8 is adjustable into a sphericalnut in the lever 3. The pins or bolts 8, 8, that connect the saw-blade Ito the stroke chain 9, by links 30, 30, may be of sufficient lengths toreceive more than one sawblade at a time. The endless chain II) isconnected or pinned parallel to the stroke chain 9 by a pin II, (seeFig. 2).

The sprocket I2 secured to a shaft I3, (see Fig. 3) may be rotated ineither direction, pulling the endless chain II) over the sprocket I4,reversing the stroke chain 9, over the sprockets I5, I5, and I5,simultaneously reciprocating the saw-blade I, which performs the sawingor cutting through the material or substance that is to be out.

A rod II, threaded on one end, may be adjusted through a link I8,secured by a pin I9, to the eccentric or cam on the hand operated lever5, the other end being secured to a crank 20 on the cam shaft 2|. A yoke22 supports an axle 23 upon which is mounted the sprocket IS. The yoke22 is inserted in holes in plates 24, 24, which have bores or holes intheir centers; and coil springs: 25, 25;,t-ravelior; slide back andforthsonthe: round bars or rods 26, 2.6-, simultaneously carryingtheyoke 22 and-sprocket lfi. The-bars or. rods26,,25, at-their-endsarefastened or boltedto the standard 2, the other ends together with theplates 21, 21, that receive the cam shaft 2I, being bolted to the end ofthe girder I.

When the lever bar 5 raises or lowers the lever 3, and the saw-blade 1,to the position as shown by the dotted lines, simultaneously the rod IIoperates the cam 28, which adjusts and regulates the necessary eventension for the sawblade I. The coil springs 25, 25, and the bend orcurve of the lever 3, absorb all the jarring that occurs when theendless chain I0 reverses the stroke chain 9, that performs the strokefor the saw-blade I, and they also sustain the lever 3, and saw-blade I,in upward position.

The arms or guides 29, 29, are employed to guide and keep the saw-bladeI perpendicular to the log or other material.

These guides are secured to the links 30, 30, at each end of thesaw-blade by bolts or pins 3 I, 3 I, so that the saw-blade may beadjusted to the proper angle. The other free ends of the guides areattached by pins or bolts 32, 32, one to the standard 2, while the otherone may be attached or pinned through holes provided on the lever 3,according to the length of the saw-blade used.

The pulley 33 and the spocket I2 are fastened to a shaft I3, which maybe operated by an electric motor, or gas-engine or any similar power.

A shaft I3 revolves in the ball-bearings in the plates 34, 34, which arebolted to the girder I by bolts 35, 35, and to the bar 36, by bolts 31.The bolts 38, 38, keep the shaft plates 34, 34 parallel one to another.The bar or shaft 39, with a crank on one end, is connected to the leverbar 49 by a rod or bar 4I.

The idle or belt tightener pulley 42, (see Fig. 4), turns on the axle43, which is secured to the bars 44. The bars 44 are secured to a shaftor bar 39, fastened by a set screw 45. The lever bar 48 operates on apin 46, while the bolt 41, with a cam thereon may be so adjusted that itrests on the bar 36, and keeps the lever bar 48 in any position requiredso that the pulley 42 tightens and loosens the belt. When it isnecessary to replace the pulley 33, by a sprocket and endless chainemployed instead of belt then the lever bar 40 may be used to operatethe clutch. The plate 48, (see Fig. 5), is bolted to the girder I. Theaxle 49, on which the sprocket I4 is mounted may be adjusted by a bolt50 in the slot 5I The plate 48 may be reversed and moved back and forthon the girder I, bolted or fastened through the holes provided, thusextending or shortening the length of the endless chain Ill, hence thestroke of the saw-blade I.

By adding or subtracting links to or from the stroke chain 9, variouslengths of saws may be employed.

The log holder 52, and its mechanical assembly are bolted and secured tothe girder I and base 53, and it is operated by a foot pedal, lookingitself mechanically as shown in Figure 6, so that the spikes 54 clearthe log or other material when the machine is moved from one cut toanother.

Figure 7 is a plan view of the movable frame, the bar 55 being a part ofthe log holder mechanism, and the wheels 55, 56, being wide enough torun upon planks or skids as well as over the floor. The holes 57 areprovided to boltand fasten the engine or motor to the frame; the bolts58, 58, fasten the base 53 to the frame. Figure 8 is an end elevation ofthe movable frame, the spikes 54, under the base 53, preventing theentire machine from sliding from the log or other material. The bolt 59fastens, tightens and holds the girder I to the standards 2, 2, and thebar 36 simultaneously serves as a pin for the lever bar 5. The braces60, 60, are to keep the girder I, and the standards 2, 2, rigid with theframe bars 6!, 6|, and to an axle 62. The handles 63 may be raised andlowered, bolted and secured to standards 2, 2, by the bolts 64.

Figures 9 and 10 are drawn to a smaller scale; they are the apronvandcover or hood to cover the revolving and-"moving' parts for protectionand safety for the operator of this machine.

I claim:

In a drag saw machine, a frame, a member rigidly secured thereto andextending therefrom,

a sprocket mounted at each end of the member, a beam pivoted at its oneend near the extended end of the member and supporting a sprocket at itsfree end, a chain trained over the sprockets and having its endsconnected to the ends of a. drag-saw blade, means to pivot the beam toadjust its angular relation to the member, and means to reciprocate thechain.

" THOMAS TELESKY.

